Dates of office: 2012 - 2018
Timothy Aidan John Knox, FSA (born 9 August 1962) was educated at Ratcliffe College, Leicestershire, and took a B.A. at the Courtauld Institute of Art. In 1989 he was appointed Assistant Curator at the Royal Institute of British Architects Drawings Collection. In 1995 he joined the National Trust as its Architectural Historian and in 2002 became that organisation's Head Curator. Among the projects with which he was involved were the restoration of the gardens of Stowe House, the acquisition of Tyntesfield and of the Workhouse in Southwell, Nottinghamshire, and the restoration of the Darnley Mausoleum in Cobham Park, Kent.
From 2005 to 2013, he was Director of Sir John Soane's Museum in London, where he oversaw a restoration project of Nos. 12 and 14 Lincoln's Inn Fields, the two houses flanking the original house-museum created by the Georgian architect Sir John Soane. From 2013 to 2018, he was the Director of the Fitzwilliam Museum, and since March 2018, he has been Director of the Royal Collection, the private art collection of the British Royal Family.